The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A way of getting a good idea when to plant pentas is to use the USDA zone info for Golden.

Planting Calendar for Pentas

Frost tolerance for pentas:	Not tolerant of frost.
When to plant:	After the last frost has passed.

You really shouldn't plant pentas until after the last frost has passed because they require warm weather.

The earliest that you can plant pentas in Golden is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant pentas and expect a good harvest is probably August. Any later than that and your pentas may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your pentas indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Golden. It might get as low as -15°F during the coldest months of winter.

Always keep in mind that USDA zone info for Golden is just an average and the actual date of last frost will vary from year to year. Since half of the time in Golden you get a frost after April 15 be ready to protect your pentas if you have a late frost.

USDA Zone Info for Golden

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Golden

You may be interested in your other planting guides for Golden.